Intro to Project Management: Project Schedule Management Schedule Baseline and Performance Measurement Planned Value Earned Value

What This Is

A Schedule Baseline and Performance Measurement are critical components of project management. They help project managers track progress, identify deviations, and make informed decisions to ensure successful project delivery. For example, imagine building a new hospital wing. The Schedule Baseline is the planned completion date and milestones, while Performance Measurement (Earned Value Management) helps the project manager assess whether the project is on track, under or over budget, and identify areas for improvement.

Key Terms & Formulas

• Schedule Baseline: A fixed plan for the project scope, schedule, budget, and resources.
• Performance Measurement Baseline (PMB): A reference point for measuring project performance.
• Planned Value (PV): The budgeted cost of work scheduled to be completed by a specific point in time (PV = BCWS).
• Earned Value (EV): The value of work completed (EV = % complete × BAC).
• Actual Cost (AC): The actual cost of work completed.
• Cost Variance (CV): The difference between Earned Value and Actual Cost (CV = EV - AC).
• Schedule Variance (SV): The difference between Earned Value and Planned Value (SV = EV - PV).
• Cost Performance Index (CPI): A measure of how efficiently resources are being used (CPI = EV / AC).
• Schedule Performance Index (SPI): A measure of how efficiently time is being used (SPI = EV / PV).
• Budget at Completion (BAC): The total budget for the project.
• Budgeted Cost of Work Scheduled (BCWS): The budgeted cost of work scheduled to be completed by a specific point in time.
• Budgeted Cost of Work Performed (BCWP): The budgeted cost of work actually completed.

Step-by-Step / Process Flow

1. Establish the Performance Measurement Baseline (PMB): Define the project scope, schedule, budget, and resources, and document them in the PMB.
2. Track Progress: Regularly update the Earned Value (EV) and Actual Cost (AC) to measure project performance.
3. Calculate Performance Metrics: Calculate CPI, SPI, CV, and SV to assess project performance.
4. Analyze Performance Metrics: Review performance metrics to identify areas of improvement and make adjustments as needed.
5. Update the Schedule Baseline: Revise the schedule baseline to reflect changes in project scope, schedule, or budget.

Common Mistakes

• Mistake: Failing to establish a clear Performance Measurement Baseline (PMB).
• Correction: Define the project scope, schedule, budget, and resources, and document them in the PMB to provide a clear reference point for measuring project performance.
• Mistake: Not regularly tracking progress and updating Earned Value (EV) and Actual Cost (AC).
• Correction: Regularly update EV and AC to measure project performance and make informed decisions.
• Mistake: Not analyzing performance metrics to identify areas of improvement.
• Correction: Review performance metrics to identify areas of improvement and make adjustments as needed.

Exam Tips

• Tip: Be able to calculate CPI, SPI, CV, and SV from given values.
• Tip: Understand the difference between Earned Value (EV) and Actual Cost (AC).
• Tip: Be able to explain the importance of establishing a clear Performance Measurement Baseline (PMB).

Quick Practice Questions

1. If the CPI is 0.8, is the project under or over budget? Answer: Under budget. Explanation: A CPI of 0.8 indicates that the project is using resources efficiently, resulting in a lower actual cost compared to the budgeted cost.
2. If the EV is $100,000 and the AC is $120,000, what is the CV? Answer: -$20,000. Explanation: The CV is the difference between EV and AC, which is -$20,000.
3. If the SPI is 1.2, is the project ahead or behind schedule? Answer: Ahead of schedule. Explanation: An SPI of 1.2 indicates that the project is completing work more efficiently than planned, resulting in a shorter completion time.

Last-Minute Cram Sheet

1. Schedule Baseline: A fixed plan for the project scope, schedule, budget, and resources.
2. Performance Measurement Baseline (PMB): A reference point for measuring project performance.
3. Planned Value (PV): The budgeted cost of work scheduled to be completed by a specific point in time (PV = BCWS).
4. Earned Value (EV): The value of work completed (EV = % complete × BAC).
5. Actual Cost (AC): The actual cost of work completed.
6. Cost Variance (CV): The difference between Earned Value and Actual Cost (CV = EV - AC).
7. Schedule Variance (SV): The difference between Earned Value and Planned Value (SV = EV - PV).
8. Cost Performance Index (CPI): A measure of how efficiently resources are being used (CPI = EV / AC).
9. Schedule Performance Index (SPI): A measure of how efficiently time is being used (SPI = EV / PV).
10. ⚠️ Do not confuse Earned Value (EV) with Actual Cost (AC).
11. ⚠️ Do not confuse Cost Variance (CV) with Schedule Variance (SV).
12. ⚠️ Do not forget to establish a clear Performance Measurement Baseline (PMB).